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/**
* TLS Cipher Suites
* (C) 2004-2010 Jack Lloyd
*
* Released under the terms of the Botan license
*/
#include <botan/tls_suites.h>
#include <botan/tls_exceptn.h>
namespace Botan {
namespace {
/**
* Convert an SSL/TLS ciphersuite to algorithm fields
*/
TLS_Ciphersuite_Algos lookup_ciphersuite(u16bit suite)
{
if(suite == TLS_RSA_WITH_RC4_128_MD5)
return TLS_Ciphersuite_Algos(TLS_ALGO_SIGNER_RSA |
TLS_ALGO_KEYEXCH_NOKEX |
TLS_ALGO_MAC_MD5 |
TLS_ALGO_CIPHER_RC4_128);
if(suite == TLS_RSA_WITH_RC4_128_SHA)
return TLS_Ciphersuite_Algos(TLS_ALGO_SIGNER_RSA |
TLS_ALGO_KEYEXCH_NOKEX |
TLS_ALGO_MAC_SHA1 |
TLS_ALGO_CIPHER_RC4_128);
if(suite == TLS_RSA_WITH_3DES_EDE_CBC_SHA)
return TLS_Ciphersuite_Algos(TLS_ALGO_SIGNER_RSA |
TLS_ALGO_KEYEXCH_NOKEX |
TLS_ALGO_MAC_SHA1 |
TLS_ALGO_CIPHER_3DES_CBC);
if(suite == TLS_RSA_WITH_AES_128_CBC_SHA)
return TLS_Ciphersuite_Algos(TLS_ALGO_SIGNER_RSA |
TLS_ALGO_KEYEXCH_NOKEX |
TLS_ALGO_MAC_SHA1 |
TLS_ALGO_CIPHER_AES128_CBC);
if(suite == TLS_RSA_WITH_AES_256_CBC_SHA)
return TLS_Ciphersuite_Algos(TLS_ALGO_SIGNER_RSA |
TLS_ALGO_KEYEXCH_NOKEX |
TLS_ALGO_MAC_SHA1 |
TLS_ALGO_CIPHER_AES256_CBC);
if(suite == TLS_RSA_WITH_AES_128_CBC_SHA256)
return TLS_Ciphersuite_Algos(TLS_ALGO_SIGNER_RSA |
TLS_ALGO_KEYEXCH_NOKEX |
TLS_ALGO_MAC_SHA256 |
TLS_ALGO_CIPHER_AES128_CBC);
if(suite == TLS_RSA_WITH_AES_256_CBC_SHA256)
return TLS_Ciphersuite_Algos(TLS_ALGO_SIGNER_RSA |
TLS_ALGO_KEYEXCH_NOKEX |
TLS_ALGO_MAC_SHA256 |
TLS_ALGO_CIPHER_AES256_CBC);
if(suite == TLS_DHE_DSS_WITH_3DES_EDE_CBC_SHA)
return TLS_Ciphersuite_Algos(TLS_ALGO_SIGNER_DSA |
TLS_ALGO_KEYEXCH_DH |
TLS_ALGO_MAC_SHA1 |
TLS_ALGO_CIPHER_3DES_CBC);
if(suite == TLS_DHE_DSS_WITH_AES_128_CBC_SHA)
return TLS_Ciphersuite_Algos(TLS_ALGO_SIGNER_DSA |
TLS_ALGO_KEYEXCH_DH |
TLS_ALGO_MAC_SHA1 |
TLS_ALGO_CIPHER_AES128_CBC);
if(suite == TLS_DHE_DSS_WITH_AES_256_CBC_SHA)
return TLS_Ciphersuite_Algos(TLS_ALGO_SIGNER_DSA |
TLS_ALGO_KEYEXCH_DH |
TLS_ALGO_MAC_SHA1 |
TLS_ALGO_CIPHER_AES256_CBC);
if(suite == TLS_DHE_DSS_WITH_AES_128_CBC_SHA256)
return TLS_Ciphersuite_Algos(TLS_ALGO_SIGNER_DSA |
TLS_ALGO_KEYEXCH_DH |
TLS_ALGO_MAC_SHA256 |
TLS_ALGO_CIPHER_AES128_CBC);
if(suite == TLS_DHE_DSS_WITH_AES_256_CBC_SHA256)
return TLS_Ciphersuite_Algos(TLS_ALGO_SIGNER_DSA |
TLS_ALGO_KEYEXCH_DH |
TLS_ALGO_MAC_SHA256 |
TLS_ALGO_CIPHER_AES256_CBC);
if(suite == TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA)
return TLS_Ciphersuite_Algos(TLS_ALGO_SIGNER_RSA |
TLS_ALGO_KEYEXCH_DH |
TLS_ALGO_MAC_SHA1 |
TLS_ALGO_CIPHER_3DES_CBC);
if(suite == TLS_DHE_RSA_WITH_AES_128_CBC_SHA)
return TLS_Ciphersuite_Algos(TLS_ALGO_SIGNER_RSA |
TLS_ALGO_KEYEXCH_DH |
TLS_ALGO_MAC_SHA1 |
TLS_ALGO_CIPHER_AES128_CBC);
if(suite == TLS_DHE_RSA_WITH_AES_256_CBC_SHA)
return TLS_Ciphersuite_Algos(TLS_ALGO_SIGNER_RSA |
TLS_ALGO_KEYEXCH_DH |
TLS_ALGO_MAC_SHA1 |
TLS_ALGO_CIPHER_AES256_CBC);
if(suite == TLS_DHE_RSA_WITH_AES_128_CBC_SHA256)
return TLS_Ciphersuite_Algos(TLS_ALGO_SIGNER_RSA |
TLS_ALGO_KEYEXCH_DH |
TLS_ALGO_MAC_SHA256 |
TLS_ALGO_CIPHER_AES128_CBC);
if(suite == TLS_DHE_RSA_WITH_AES_256_CBC_SHA256)
return TLS_Ciphersuite_Algos(TLS_ALGO_SIGNER_RSA |
TLS_ALGO_KEYEXCH_DH |
TLS_ALGO_MAC_SHA256 |
TLS_ALGO_CIPHER_AES256_CBC);
if(suite == TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256)
return TLS_Ciphersuite_Algos(TLS_ALGO_SIGNER_ECDSA |
TLS_ALGO_KEYEXCH_ECDH |
TLS_ALGO_MAC_SHA256 |
TLS_ALGO_CIPHER_AES128_CBC);
if(suite == TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384)
return TLS_Ciphersuite_Algos(TLS_ALGO_SIGNER_ECDSA |
TLS_ALGO_KEYEXCH_ECDH |
TLS_ALGO_MAC_SHA384 |
TLS_ALGO_CIPHER_AES256_CBC);
if(suite == TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256)
return TLS_Ciphersuite_Algos(TLS_ALGO_SIGNER_ECDSA |
TLS_ALGO_KEYEXCH_ECDH |
TLS_ALGO_MAC_SHA256 |
TLS_ALGO_CIPHER_AES128_CBC);
if(suite == TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384)
return TLS_Ciphersuite_Algos(TLS_ALGO_SIGNER_ECDSA |
TLS_ALGO_KEYEXCH_ECDH |
TLS_ALGO_MAC_SHA384 |
TLS_ALGO_CIPHER_AES256_CBC);
return TLS_Ciphersuite_Algos(0);
}
std::pair<std::string, u32bit> cipher_code_to_name(TLS_Ciphersuite_Algos algo)
{
if((algo & TLS_ALGO_CIPHER_MASK) == TLS_ALGO_CIPHER_RC4_128)
return std::make_pair("RC4", 128);
if((algo & TLS_ALGO_CIPHER_MASK) == TLS_ALGO_CIPHER_3DES_CBC)
return std::make_pair("3DES", 24);
if((algo & TLS_ALGO_CIPHER_MASK) == TLS_ALGO_CIPHER_AES128_CBC)
return std::make_pair("AES-128", 16);
if((algo & TLS_ALGO_CIPHER_MASK) == TLS_ALGO_CIPHER_AES256_CBC)
return std::make_pair("AES-256", 32);
if((algo & TLS_ALGO_CIPHER_MASK) == TLS_ALGO_CIPHER_SEED_CBC)
return std::make_pair("SEED", 16);
throw TLS_Exception(INTERNAL_ERROR,
"CipherSuite: Unknown cipher type " + to_string(algo));
}
std::string mac_code_to_name(TLS_Ciphersuite_Algos algo)
{
if((algo & TLS_ALGO_MAC_MASK) == TLS_ALGO_MAC_MD5)
return "MD5";
if((algo & TLS_ALGO_MAC_MASK) == TLS_ALGO_MAC_SHA1)
return "SHA-1";
if((algo & TLS_ALGO_MAC_MASK) == TLS_ALGO_MAC_SHA256)
return "SHA-256";
if((algo & TLS_ALGO_MAC_MASK) == TLS_ALGO_MAC_SHA384)
return "SHA-384";
throw TLS_Exception(INTERNAL_ERROR,
"CipherSuite: Unknown MAC type " + to_string(algo));
}
}
/**
* CipherSuite Constructor
*/
CipherSuite::CipherSuite(u16bit suite_code)
{
if(suite_code == 0)
return;
TLS_Ciphersuite_Algos algos = lookup_ciphersuite(suite_code);
if(algos == 0)
throw Invalid_Argument("Unknown ciphersuite: " + to_string(suite_code));
sig_algo = TLS_Ciphersuite_Algos(algos & TLS_ALGO_SIGNER_MASK);
kex_algo = TLS_Ciphersuite_Algos(algos & TLS_ALGO_KEYEXCH_MASK);
std::pair<std::string, u32bit> cipher_info = cipher_code_to_name(algos);
cipher = cipher_info.first;
cipher_key_length = cipher_info.second;
mac = mac_code_to_name(algos);
}
}
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